本题目来源于试卷: Electricity and Circuits: Resistor，类别为 美国物理杯赛(Physics Bowl)
[单选题]
01.10: Each member of a f h.. -qbdnz qc5m5n)b:x8nqls8boleq7 edq 6zi;1 3jiamily of six owns a computer rated at 500 watts in a 120 V circuit. If all computers are plugged into a single circuit protected by a 20 ampere fusod3ze; 1 q6b li8q7ieje, what is the maximum number of the computers can be operating at the sametime?
A. 1
B. 2
C. 3
D. 4
E. 5 or more
参考答案: D
本题详细解析:
暂无
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